/Engine/Source/Runtime/Engine/Classes/Engine/Engine.h
Attempts to find what is referencing a world that should have been garbage collected
static void FindAndPrintStaleReferencesToObject ( [UObject](API\Runtime\CoreUObject\UObject\UObject) * ObjectToFindReferencesTo, [ELogVerbosity::Type](API\Runtime\Core\Logging\ELogVerbosity__Type) Verbosity )